ACE System: Automating Entry Filing for Customs Brokers

What Is the Automated Commercial Environment (ACE)?

The Automated Commercial Environment (ACE) is the primary system through which the US trade community interacts with US Customs and Border Protection (CBP) to process imports and exports. Operated by CBP and mandated by executive order, ACE replaced the legacy Automated Commercial System (ACS) and serves as the single window for trade data — consolidating entry filing, cargo manifests, partner government agency (PGA) data, and post-entry actions into one unified platform. Every licensed customs broker, importer of record, and freight forwarder in the United States must use ACE for filing entry summaries, making duty payments, and communicating with CBP electronically.

Since the full transition from ACS to ACE was completed, all entry summaries, protests, drawback claims, and in-bond movements are processed exclusively through ACE. Understanding how ACE works is not optional for customs brokers — it is a fundamental operational requirement. The system handles over 60 million entry summaries annually and processes more than $3 trillion worth of imports into the United States each year.

Types of Customs Entries in ACE

Not all imports enter the US the same way. ACE supports multiple entry types, each designed for a specific commercial or regulatory scenario. Choosing the correct entry type is critical — filing the wrong type can trigger delays, penalties, and costly reclassifications. Here are the primary entry types every customs broker must understand.

• Entry Type 01 — Consumption Entry: The most common entry type, used for goods entering the US commerce stream for immediate use or sale. Duties, taxes, and fees are assessed and collected at the time of entry summary filing. Approximately 85% of all US imports are filed as consumption entries.
• Entry Type 06 — Warehouse Entry: Used when goods are destined for a Customs bonded warehouse. Duties are deferred until the goods are withdrawn for consumption. This is a strategic option for importers who want to delay duty payment or re-export goods without paying US duties at all.
• Entry Type 06 Withdrawal — Warehouse Withdrawal: Filed when goods previously entered into a bonded warehouse are withdrawn for consumption, export, or transfer. The appropriate duties and taxes are calculated at the time of withdrawal based on the current tariff rate.
• Entry Type 26 — Foreign Trade Zone (FTZ) Entry: Goods admitted to a Foreign Trade Zone are not considered to have entered US commerce. FTZ entries allow importers to defer, reduce, or eliminate duties through manufacturing or repackaging operations within the zone before the goods enter US commerce.
• Entry Type 11 — Informal Entry: For shipments valued under $2,500 (with some exceptions), informal entry provides a simplified filing process with lower documentation requirements. Duties are typically collected at the port of entry.
• Entry Type 21/22 — In-Bond Entry: Used to move goods under customs supervision from the port of arrival to another port, a bonded warehouse, or an FTZ without paying duties. In-bond movements are tracked electronically through ACE.

How Entry Filing Works in ACE: Step by Step

1. Pre-arrival filing: The customs broker or self-filing importer submits entry/release data (CBP Form 3461 equivalent) electronically through ACE, typically 5-15 days before the cargo arrives. This includes the importer of record number, HTS classification, country of origin, and estimated duties.
2. CBP processing and cargo release: CBP reviews the entry data against risk-based criteria, PGA requirements, and admissibility rules. If the shipment clears automated screening, CBP issues an electronic release message through ACE. If selected for examination, the broker is notified electronically.
3. Entry summary filing: Within 10 working days of cargo release, the broker must file the entry summary (CBP Form 7501 equivalent) through ACE. This is the definitive document that calculates duties, taxes, and fees. Payment is typically made through ACE's Automated Clearinghouse (ACH) system.
4. Liquidation: CBP reviews the entry summary and, if accepted, liquidates the entry — finalizing the duty assessment. Liquidation typically occurs within 314 days of entry. If CBP disagrees with the classification or value, they may issue a rate advance or reliquidation notice through ACE.
5. Post-entry actions: All post-entry corrections (Post Summary Corrections or PSCs), protests, drawback claims, and reconciliation entries are filed and managed through ACE. This creates a complete audit trail from entry to final disposition.

ACE Portal vs Automated Broker Interface (ABI)

There are two ways to interact with ACE. The ACE Portal is a web-based interface that brokers and importers can use directly through a browser. It is useful for account management, ad-hoc queries, and reviewing entry status, but it is not practical for high-volume filing. The Automated Broker Interface (ABI) is the system-to-system electronic connection that allows brokerage software to communicate directly with ACE. Nearly all commercial entry filing is done through ABI connections because they enable automated, high-speed transmission of entry data without manual portal interaction.

To file through ABI, a broker must use software certified by CBP for ABI transmission. This software translates entry data into the specific record formats and data elements required by CBP, transmits them electronically, and receives response messages (releases, rejections, requests for information) back from ACE. The quality and capability of the ABI software directly impacts filing speed, error rates, and a broker's operational efficiency.

How AI and Automation Integrate with ACE

Modern customs technology is transforming how brokers interact with ACE. AI-powered tools do not replace ACE — they sit upstream, preparing and validating data before it enters the ACE pipeline. This pre-filing automation dramatically reduces errors, speeds up processing, and frees broker staff to focus on exceptions rather than routine data entry.

• Automated HTS classification: AI tools like TariffPro analyze product descriptions and assign HTS codes before entry data is compiled, reducing classification errors that trigger CBP rejections and rate advances.
• Document extraction: AI reads commercial invoices, packing lists, and bills of lading to extract entry data elements automatically, eliminating manual data entry and transcription errors.
• Validation and error checking: Before data is transmitted to ACE via ABI, automated validation rules check for missing data, inconsistent values, and known CBP rejection triggers — catching errors before they become costly.
• Duty calculation and optimization: AI analyzes applicable trade programs (USMCA, GSP, FTZ benefits) and calculates the optimal duty treatment for each line item, ensuring importers do not overpay.
• Post-entry monitoring: Automated systems monitor CBP responses, track liquidation timelines, and flag entries that may require Post Summary Corrections before the liquidation deadline.

Key Benefits of ACE for Customs Brokers

• Single window efficiency: ACE consolidates data for CBP and 47 participating government agencies into one system, eliminating duplicate filings across agencies like FDA, USDA, EPA, and CPSC.
• Real-time visibility: ACE provides real-time status updates on cargo release, entry processing, and liquidation — replacing the days-long delays of the legacy ACS system.
• Electronic payments: Duty payments through ACH are faster, more secure, and create automatic reconciliation records for accounting purposes.
• Account-level management: The ACE Secure Data Portal gives brokers account-level visibility across all their clients, enabling portfolio-wide compliance monitoring.
• Data analytics: ACE data exports allow brokers to analyze filing patterns, identify classification trends, and conduct proactive compliance reviews for their clients.

“ACE is not just a filing system — it is the data backbone of US trade compliance. Brokers who master ACE and integrate upstream automation tools are operating at a fundamentally different level of efficiency and accuracy than those still treating entry filing as a manual process.”

— Camtom Team